Philosophy is Written in the Grand Book of the Universe
Philosophy is written in this grand book –I mean the universe –
Which stands continually open to our gaze.
But it cannot be understood
Unless one first learns to comprehend the language
And interpret the characters in which it is written.
It is written in the language of mathematics,
And its characters are triangles, circles, and other geometric figures,
Without which it is humanly impossible to understand a single word of it. — Galileo Galilei, Il Saggiatore (1623) (Nelson)
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